Keto Lemon Meringue Wreath Cupcakes

Name: Keto Lemon Meringue Wreath Cupcakes
Prep time: 45 min
Cook time: 2 h
Total time: 2 h 45 min
Cuisine: Australian
Ingredients: 50 g light olive oil; 50 g powdered sweetener or to taste (I used Swerve); 200 g almond meal; 4 large eggs; 50 g sour cream; 1 teaspoon lemon juice & zest; 2 teaspoons baking powder; 3 egg whites (weight 120g); ½ teaspoon cream of tartar; 40 g powdered sweetener (I used Swerve, 20g extra); ¼ teaspoon xanthan gum; 1 teaspoon lemon juice; 1 teaspoon vinegar; 1 batch Lemon Curd (click for recipe); 300 ml thickened cream whipped with extra 20g powdered sweetener